Add TrBlink<> (profezzorn#491)

ProffieOS.ino

@@ -534,6 +534,7 @@ struct is_same_type<T, T> { static const bool value = true; };
 #include "transitions/extend.h"
 #include "transitions/center_wipe.h"
 #include "transitions/sequence.h"
+#include "transitions/blink.h"
 
 #include "styles/legacy_styles.h"
 //responsive styles

transitions/blink.h

@@ -0,0 +1,40 @@
+#ifndef TRANSITIONS_BLINK_H
+#define TRANSITIONS_BLINK_H
+
+#include "base.h"
+
+// Usage: TrBlinkX<MILLIS_FUNCTION, N, WIDTH_FUNCTION>
+// or: TrBlink<MILLIS, N, WIDTH>
+// MILLIS_FUNCTION: FUNCTION
+// MILLIS: a number
+// N: a number
+// WIDTH_FUNCTION: FUNCTION, defaults to Int<16384>
+// WIDTH: a number, defaults to 16384
+// return value: TRANSITION
+// Blinks A-B N times in MILLIS, based on WIDTH (0 ~ 32768)
+// If WIDTH = 16384 A and B appear equally, lower decreases length of A, higher increases length of A
+template<class MILLIS, int N, class WIDTH = Int<16384>>
+class TrBlinkX : public TransitionBaseX<MILLIS> {
+public:
+  void run(BladeBase* blade) {
+    TransitionBaseX<MILLIS>::run(blade);
+    width_.run(blade);
+    blink_ = (this->update(32768 * N) & 0x7fff) < width_.calculate(blade);
+  }
+private:
+  PONUA SVFWrapper<WIDTH> width_;
+  bool blink_;
+public:  
+  template<class A, class B>
+    auto getColor(const A& a, const B& b, int led) -> decltype(MixColors(a,b,1,1)) {
+      if (blink_) {
+        return a;
+      } else {
+        return b;
+      }
+  }
+};
+
+template<int MILLIS, int N, int WIDTH = 16384> using TrBlink = TrBlinkX<Int<MILLIS>, N, Int<WIDTH>>;
+
+#endif